// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "net/ftp/ftp_directory_listing_parser_windows.h"

#include <vector>

#include "base/strings/string_number_conversions.h"
#include "base/strings/string_split.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "base/time/time.h"
#include "net/ftp/ftp_directory_listing_parser.h"
#include "net/ftp/ftp_util.h"

namespace net {

bool ParseFtpDirectoryListingWindows(
    const std::vector<base::string16>& lines,
    std::vector<FtpDirectoryListingEntry>* entries)
{
    for (size_t i = 0; i < lines.size(); i++) {
        if (lines[i].empty())
            continue;

        std::vector<base::string16> columns = base::SplitString(
            base::CollapseWhitespace(lines[i], false), base::ASCIIToUTF16(" "),
            base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);

        // Every line of the listing consists of the following:
        //
        //   1. date
        //   2. time
        //   3. size in bytes (or "<DIR>" for directories)
        //   4. filename (may be empty or contain spaces)
        //
        // For now, make sure we have 1-3, and handle 4 later.
        if (columns.size() < 3)
            return false;

        FtpDirectoryListingEntry entry;
        if (base::EqualsASCII(columns[2], "<DIR>")) {
            entry.type = FtpDirectoryListingEntry::DIRECTORY;
            entry.size = -1;
        } else {
            entry.type = FtpDirectoryListingEntry::FILE;
            if (!base::StringToInt64(columns[2], &entry.size))
                return false;
            if (entry.size < 0)
                return false;
        }

        if (!FtpUtil::WindowsDateListingToTime(columns[0],
                columns[1],
                &entry.last_modified)) {
            return false;
        }

        entry.name = FtpUtil::GetStringPartAfterColumns(lines[i], 3);
        if (entry.name.empty()) {
            // Some FTP servers send listing entries with empty names.
            // It's not obvious how to display such an entry, so ignore them.
            // We don't want to make the parsing fail at this point though.
            // Other entries can still be useful.
            continue;
        }

        entries->push_back(entry);
    }

    return true;
}

} // namespace net
